open NETCDF and CTL files

[Boyin Huang]

Can grads open NETCDF and CTL files at the same time?

Here is my example:

'open /u/wx52bh/r2/mnth/erate_clm_13.ctl'
'sdfopen /u/wx52bh/gpcp/gpcp.nc'
'd pcp.2'

The error message is:
Data Request Warning:  Request beyond file limits
Cannot contour grid - all undefined values

When each file is opened separately, it can be displayed successfully.
When both are CTL or NC files, they can also be displayed.

Thanks